Originally Posted by
bhkyte
I don't really get the four wheeled rack on a birdie. My 2 wheeled rack sits loower on the floor as a smaller package and you use the front rack as a pulling handle like a wheeled suitcase. That seems better to me. However, I wheel my mezzo on one wheel, there is room for different aproaches.
Those 2 wheeled things don't seem to be actual racks, but an accessory to let you wheel the bike around as mentioned and nothing more. I can see no way to use them to carry luggage or other items.
The four wheeled racks are just that. They serve a dual purpose, carrying cargo and letting you wheel the bike while folded. Not only do they act as a kickstand, you can also complete the fold without hoisting the bike.